So, we can shrink the sidebar, correct? What if we had our browser save the way we left the sidebar (much like it saves All/Personal/etc)? Because I can navigate just fine with the bar this way and it gives me extra space.

You will have to change the layouts that are being used by the deck (I assume they are linked to the last template in your list).

So on the layouts page (under advanced tools in the sidebar), select the template, then select the layout and edit the HTML for both the back and the front of the card:

With flip cards the fields in there will look like {{fieldname}}. What you want to do is change the primary field (so the one you want to be tested on, e.g: english) from {{fieldname}} to {{type:fieldname}} for a normal input field, and {{type-ja:fieldname}} for a japanese input field.

Be sure to do this for both front and back and for all layouts where needed

Another option you might want to consider is overwriting them by copy pasting the default layouts. You would then have to change the {{fieldname}} tags to match your template fields though.